SproutCore, initially created in 2007 by Sproutit as the basis for their Mailroom application, is available under the MIT License.

Apple has contributed greatly to the project as part of a Web 2.0 initiative.

SproutCore 1.5 contained significant updates to view layers, added a new CSS parser that builds off of SCSS, WAI-ARIA support, modular loading, and additional features.

The team also emphasized the importance of reducing file size to support developing applications for mobile devices.

SproutCore UI is designed to provide common user interface elements for developers targeting mobile devices.